CN109721299B - Method for preparing baking-free ceramsite by electrolytic manganese slag - Google Patents
Method for preparing baking-free ceramsite by electrolytic manganese slag Download PDFInfo
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- CN109721299B CN109721299B CN201910100996.6A CN201910100996A CN109721299B CN 109721299 B CN109721299 B CN 109721299B CN 201910100996 A CN201910100996 A CN 201910100996A CN 109721299 B CN109721299 B CN 109721299B
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Abstract
The invention discloses a method for preparing baking-free ceramsite by electrolytic manganese slag. a. Adding exciting agent into electrolytic manganese residue, and heap leaching for 5-8 days to obtain product A; b. adding sulfate radical into product A, and heap leaching for 2-5 days to obtain product B; c. adding cement, modifier, reinforcing agent and water into the product B, and stirring and mixing to obtain a product C; d. and pelletizing and maintaining the product C by a pelletizer to obtain a finished product. The invention has the advantages of large mixing amount of electrolytic manganese slag, simple process, lower cost, wide product application, capability of meeting the process production requirement, positive promotion of the benign development of the manganese industry and development of a new way for the comprehensive utilization of the manganese slag.
Description
Technical Field
The invention relates to the fields of metallurgy, chemical industry, building materials, environmental protection and the like, in particular to electrolytic manganese production in the metallurgy field.
Background
At present, the electrolytic manganese production capacity in China is mainly concentrated in places of Ningxia, Guizhou, Hunan, Chongqing, Guangxi, Xinjiang and the like. Except for high-grade Ganna ore used in Ningxia Tianyuan manganese industry, low-grade ore with Mn% of 12-18% is mostly used in the industry, and generally, 7-9 tons of combined slag are generated in each ton of metal manganese. Along with the aggravation of the dilution degree of ores in partial areas in China, the manganese slag quantity per ton is continuously increased, and the manganese slag quantity per ton of a few enterprises exceeds 10 tons. Calculated according to the output of electrolytic manganese metal in 2017, the slag yield in the whole country is about 1200 million tons or more. According to the accumulated calculation of historical yield, the quantity of manganese slag stored in the country exceeds 1 hundred million tons.
Researchers at home and abroad aim at the comprehensive utilization of the electrolytic manganese slag, and develop various researches on the recovery and extraction of valuable metals from the electrolytic manganese slag, the application of the electrolytic manganese slag in the agricultural field, the preparation of cement retarders from the electrolytic manganese slag, the application of the electrolytic manganese slag in paving materials, the application of the electrolytic manganese slag in wall materials, the effect of the electrolytic manganese slag in wastewater treatment, the preparation of baking-free bricks and sintered bricks from the electrolytic manganese slag and the like.
Disclosure of Invention
The invention aims to provide a method for preparing non-sintered ceramsite by electrolytic manganese, aiming at the harm caused by the stacking of a large amount of electrolytic manganese slag. The invention has the characteristics of large mixing amount of electrolytic manganese slag, simple process, lower cost, wide product application, capability of meeting the process production requirement, positive promotion of the benign development of the manganese industry and development of a new way for comprehensive utilization of the manganese slag.
The present invention is thus achieved. A method for preparing non-sintered ceramsite by electrolytic manganese slag, which comprises the following steps of;
a. adding exciting agent into electrolytic manganese residue, and heap leaching for 5-8 days to obtain product A;
b. adding sulfate radical into product A, and heap leaching for 2-5 days to obtain product B;
c. adding cement, modifier, reinforcing agent and water into the product B, and stirring and mixing to obtain a product C;
d. and pelletizing and maintaining the product C by a pelletizer to obtain a finished product.
In the method for preparing the baking-free ceramsite by using the electrolytic manganese slag, in the step a, the excitant is one or more of potassium oxide, sodium oxide, calcium oxide and/or magnesium oxide.
In the step a, 1-10% of exciting agent is added into the electrolytic manganese slag according to mass fraction, and the heap leaching solution is repeatedly pumped to the surface of the electrolytic manganese slag by a pump in the heap leaching process, wherein the heap leaching temperature is 25-50 ℃.
In the step b, sulfate radicals are added into the product A, and the sulfate radicals are one or more of sodium sulfate, potassium sulfate or/and sulfuric acid.
In the method for preparing the baking-free ceramsite by using the electrolytic manganese slag, in the step b, 5-25% of sulfate radical compound is added into the product A according to the mass fraction.
In the step b, in the process of heap leaching, a pump is adopted to repeatedly pump the heap leaching solution onto the surface of the product A, and the temperature of the heap leaching is 25-50 ℃.
In the method for preparing the baking-free ceramsite by using the electrolytic manganese slag, in the step c, 10-30% of cement, 10-25% of a modifying agent, 0.1-0.3% of a reinforcing agent and 25-30% of water are added into the B product by mass.
In the method for preparing the baking-free ceramsite by using the electrolytic manganese slag, in the step c, the modifier is one or two of red mud and/or fly ash.
In the method for preparing the baking-free ceramsite by using the electrolytic manganese slag, in the step c, the reinforcing agent is magnesium lignosulfonate.
In the step d, the product C is pelletized by a wet pelletizing machine, and is maintained by spraying water for 25 to 30 days to obtain a finished product.
Compared with the prior art, the invention has the following advantages;
1. the method provides a path for the comprehensive utilization of the electrolytic manganese slag on one hand, expands the sources and the types of the raw materials of the ceramsite and reduces the treatment cost of the electrolytic manganese slag on the other hand;
2. compared with the prior art for manufacturing the ceramsite, the sintering process is not needed, so that the method is more energy-saving and environment-friendly, and the research on electrolytic manganese slag in the prior art is not available;
3. the method mainly comprises the steps of heap leaching of electrolytic manganese slag, uniform mixing and stirring, pelletizing and maintenance; exciting the electrolytic manganese slag in the step a of the invention to enable the electrolytic manganese slag to carry out ore phase reconstruction, wherein the original electrolytic manganese slag has no volcanic ash activity, and obtaining slag with the volcanic ash activity through the treatment; in the step b, sulfate radicals are added to react with the product A, and the reaction is stabilized and strengthened, so that the electrolytic manganese slag is continuously excited and activated to obtain slag with volcanic ash activity for preparing the non-fired ceramsite;
4. the existing electrolytic manganese slag is stored in a stacking mode at present, the stacking storage amount is large, the key is that the country does not correct a new slag field at present to decide the production of the slag, and the basic method has larger cost advantage compared with the baking ceramsite, the processing cost of the method is about 50-80 yuan per ton of slag, the baking-free ceramsite can be obtained, and the method has considerable advantages compared with the stacking storage of the existing electrolytic manganese slag.
Experiments prove that:
1. the applicant respectively carries out strength detection on the unfired ceramsite finished products prepared in the embodiment of the invention, and the detection results are shown in the following table:
the above table shows that the strength of the finished product of the non-sintered ceramsite reaches 150-280 kg/ball, the non-sintered ceramsite prepared by the method has high strength, can meet the production requirements of the non-sintered ceramsite process, has wide product application and better market prospect, actively promotes the benign development of the manganese industry, and opens up a new way for the comprehensive utilization of manganese slag.
In conclusion, the invention has the advantages of large mixing amount of electrolytic manganese slag, simple process, lower cost, wide product application, capability of meeting the process production requirement, positive promotion of the benign development of the manganese industry and development of a new way for the comprehensive utilization of the manganese slag.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1. A method for preparing non-sintered ceramsite by electrolytic manganese slag, which comprises the following steps of;
a. taking 500kg of electrolytic manganese slag, adding 1% of exciting agent into the electrolytic manganese slag according to the mass fraction, repeatedly pumping heap leaching liquid to the surface of the electrolytic manganese slag by a pump in the heap leaching process, wherein the temperature of the heap leaching is 25 ℃, and the heap leaching is carried out for 5 days to obtain a product A; wherein the excitant is potassium oxide;
b. according to the mass of the product A, adding sulfate radicals into the product A by mass fraction, specifically adding 5% of sulfate radical compound into the product A, repeatedly pumping heap leaching solution onto the electrolytic manganese slag surface by a pump in the heap leaching process, wherein the temperature of heap leaching is 25 ℃, and heap leaching is carried out for 2 days to obtain a product B; wherein the sulfate compound is sodium sulfate;
c. according to the mass of the B product, adding 10% of cement, 10% of modifying agent, 0.1% of reinforcing agent and 25% of water into the B product by mass, and stirring and mixing to obtain a C product; wherein the modifying agent is red mud; the reinforcing agent is magnesium lignosulfonate;
d. and (5) pelletizing the product C by a wet pelletizing machine, and performing water spraying maintenance for 25 days to obtain a finished product.
Example 2. A method for preparing non-sintered ceramsite by electrolytic manganese slag, which comprises the following steps of;
a. taking 500kg of electrolytic manganese slag, adding 3% of exciting agent into the electrolytic manganese slag according to the mass fraction, repeatedly pumping heap leaching liquid onto the electrolytic manganese slag surface by adopting a pump in the heap leaching process, wherein the temperature of the heap leaching is 30 ℃, and the heap leaching is carried out for 6 days to obtain a product A; wherein the excitant is potassium oxide and sodium oxide;
b. according to the mass of the product A, adding sulfate radicals into the product A by mass fraction, specifically adding 10% of sulfate radical compound into the product A, repeatedly pumping heap leaching solution onto the electrolytic manganese slag surface by a pump in the heap leaching process, wherein the temperature of heap leaching is 30 ℃, and heap leaching is carried out for 3 days to obtain a product B; wherein the sulfate compound is sodium sulfate and potassium sulfate;
c. according to the mass of the B product, adding 15% of cement, 15% of modifying agent, 0.2% of reinforcing agent and 26% of water into the B product by mass, and stirring and mixing to obtain a C product; wherein the modifying agent is fly ash; the reinforcing agent is magnesium lignosulfonate;
d. and (5) pelletizing the product C by a wet pelletizing machine, and spraying water for 27 days to obtain a finished product.
Example 3. A method for preparing non-sintered ceramsite by electrolytic manganese slag, which comprises the following steps of;
a. taking 500kg of electrolytic manganese slag, adding 6% of exciting agent into the electrolytic manganese slag according to the mass fraction, repeatedly pumping heap leaching liquid onto the electrolytic manganese slag surface by adopting a pump in the heap leaching process, wherein the temperature of the heap leaching is 40 ℃, and the heap leaching is carried out for 7 days to obtain a product A; wherein the excitant is potassium oxide, sodium oxide and calcium oxide;
b. according to the mass of the product A, adding sulfate radicals into the product A by mass fraction, specifically adding 15% of sulfate radical compound into the product A, repeatedly pumping heap leaching solution onto the electrolytic manganese slag surface by using a pump in the heap leaching process, wherein the temperature of heap leaching is 35 ℃, and heap leaching is carried out for 4 days to obtain a product B; wherein the sulfate compound is sodium sulfate, potassium sulfate and sulfuric acid;
c. according to the mass of the B product, adding 20% of cement, 18% of modifying agent, 0.3% of reinforcing agent and 27% of water into the B product by mass, and stirring and mixing to obtain a C product; wherein the modifying agent is red mud and fly ash; the reinforcing agent is magnesium lignosulfonate;
d. and pelletizing the product C by a wet pelletizing machine, and spraying water for 28 days to obtain a finished product.
Example 4. A method for preparing non-sintered ceramsite by electrolytic manganese slag, which comprises the following steps of;
a. taking 500kg of electrolytic manganese slag, adding 8% of exciting agent into the electrolytic manganese slag according to the mass fraction, repeatedly pumping heap leaching liquid onto the electrolytic manganese slag surface by adopting a pump in the heap leaching process, wherein the temperature of the heap leaching is 45 ℃, and the heap leaching is carried out for 6 days to obtain a product A; wherein the excitant is potassium oxide, sodium oxide, calcium oxide and magnesium oxide;
b. according to the mass of the product A, adding sulfate radicals into the product A by mass fraction, specifically adding 20% of sulfate radical compound into the product A, repeatedly pumping heap leaching solution onto the electrolytic manganese slag surface by a pump in the heap leaching process, wherein the temperature of heap leaching is 45 ℃, and heap leaching is carried out for 4 days to obtain a product B; wherein the sulfate compound is potassium sulfate and sulfuric acid;
c. according to the mass of the B product, adding 25% of cement, 22% of modifying agent, 0.2% of reinforcing agent and 28% of water into the B product by mass, and stirring and mixing to obtain a C product; wherein the modifying agent is fly ash; the reinforcing agent is magnesium lignosulfonate;
d. and (5) pelletizing the product C by a wet pelletizing machine, and spraying water for maintenance for 29 days to obtain a finished product.
Example 5. A method for preparing non-sintered ceramsite by electrolytic manganese slag, which comprises the following steps of;
a. taking 500kg of electrolytic manganese slag, adding 10% of exciting agent into the electrolytic manganese slag according to the mass fraction, repeatedly pumping heap leaching liquid onto the electrolytic manganese slag surface by adopting a pump in the heap leaching process, wherein the temperature of heap leaching is 50 ℃, and heap leaching is carried out for 8 days to obtain a product A; wherein the excitant is potassium oxide, sodium oxide, calcium oxide and magnesium oxide;
b. according to the mass of the product A, adding sulfate radicals into the product A by mass fraction, specifically adding 25% of sulfate radical compound into the product A, repeatedly pumping heap leaching solution onto the electrolytic manganese slag surface by a pump in the heap leaching process, wherein the temperature of heap leaching is 50 ℃, and heap leaching is carried out for 5 days to obtain a product B; wherein the sulfate compound is sodium sulfate, potassium sulfate and sulfuric acid;
c. according to the mass of the B product, adding 30% of cement, 25% of modifying agent, 0.3% of reinforcing agent and 30% of water into the B product by mass, and stirring and mixing to obtain a C product; wherein the modifying agent is red mud and fly ash; the reinforcing agent is magnesium lignosulfonate;
d. and (5) pelletizing the product C by a wet pelletizing machine, and performing water spraying maintenance for 30 days to obtain a finished product.
Claims (5)
1. A method for preparing non-sintered ceramsite by using electrolytic manganese slag is characterized by comprising the following steps: the preparation method comprises the following steps;
a. adding exciting agent into electrolytic manganese residue, and heap leaching for 5-8 days to obtain product A;
b. adding sulfate radical into product A, and heap leaching for 2-5 days to obtain product B;
c. adding cement, modifier, reinforcing agent and water into the product B, and stirring and mixing to obtain a product C;
d. pelletizing and maintaining the product C by a pelletizer to obtain a finished product;
in the step a, the excitant is two or more than two of potassium oxide, sodium oxide or/and magnesium oxide, wherein potassium oxide is a necessary component;
in the step a, 1-10% of exciting agent is added into the electrolytic manganese slag according to mass fraction, and heap leaching solution is repeatedly pumped to the surface of the electrolytic manganese slag by a pump in the heap leaching process, wherein the temperature of the heap leaching is 25-50 ℃;
in the step b, sulfate radicals are added into the product A, and the sulfate radicals are one or more of sodium sulfate, potassium sulfate or/and sulfuric acid;
in the step b, 5-25% of sulfate compound is added into the product A by mass fraction;
in the step c, 10-30% of cement, 10-25% of modifying agent, 0.1-0.3% of reinforcing agent and 25-30% of water are added into the B product in percentage by mass.
2. The method for preparing baking-free ceramsite by using electrolytic manganese slag according to claim 1, which is characterized by comprising the following steps of: in the step b, repeatedly pumping the heap leaching solution to the surface of the product A by using a pump in the heap leaching process, wherein the temperature of the heap leaching is 25-50 ℃.
3. The method for preparing baking-free ceramsite by using electrolytic manganese slag according to claim 1, which is characterized by comprising the following steps of: in the step c, the hardening and tempering agent is one or two of red mud and/or fly ash.
4. The method for preparing baking-free ceramsite by using electrolytic manganese slag according to claim 1, which is characterized by comprising the following steps of: in the step c, the reinforcing agent is magnesium lignosulfonate.
5. The method for preparing baking-free ceramsite by using electrolytic manganese slag according to claim 1, which is characterized by comprising the following steps of: and d, performing pelletizing on the product C by using a wet pelletizing machine, and performing water spraying maintenance for 25-30 days to obtain a finished product.
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| CN112811885A (en) * | 2021-01-05 | 2021-05-18 | 贵州大学 | Preparation method and application of proppant added with electrolytic manganese slag ceramsite |
| CN113800948A (en) * | 2021-11-05 | 2021-12-17 | 安徽理工大学 | High-content manganese slag compound residue soil and coal-series waste high-strength porous heat-insulation ceramsite and preparation method thereof |
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| CN102617097B (en) * | 2012-04-09 | 2013-08-21 | 武汉科技大学 | Non-sintered ceramic aggregate with stone coal vanadium extraction tailings as main raw material and preparation method thereof |
| CN104446363A (en) * | 2014-12-23 | 2015-03-25 | 广西龙共投资有限公司 | Method of preparing ceramsite from manganese carbonate residues |
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